Method for manufacturing nonaqueous electrolyte secondary cell, and cell assembly
Abstract:
Provided is a method for manufacturing a nonaqueous electrolyte secondary cell which can maintain and demonstrate an excellent cell characteristic over a long period of time. The method for manufacturing a nonaqueous electrolyte secondary cell provided by the present invention includes: a step of preparing a positive electrode having a positive electrode mix layer and a negative electrode having a negative electrode mix layer; and a step of housing the positive electrode and the negative electrode together with a nonaqueous electrolytic solution in a cell case. The nonaqueous electrolytic solution includes a Compound (I) constituted by lithium tris(oxalate)phosphate. When a BET specific surface area of the negative electrode mix layer is denoted by X (m2/g) and the amount of the Compound (I) added to the entire amount of the nonaqueous electrolytic solution is denoted by Y (% by mass), the following relationships are satisfied: 3≦X≦4.3; 0.4≦Y≦1.5; and (Y/X)≦0.35.
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